@misc{indiciaeb1aa1dd869fd,
  title = {Potentiometric surface of the Upper Floridan aquifer in the St.Johns River Water Management District and vicinity, Florida May 1993},
  author = {Keith J. Halford and L. C. Murray and G. G. Phelps and R. M. Spechler and L. A. Bradner},
  year = {1993},
  doi = {10.3133/ofr93451},
  url = {https://pubs.usgs.gov/publication/ofr93451},
  note = {Source identifier: ofr93451}
}